The three studies that make up this work each deal with another facet or subdiscipline of Epicurean cosmology. The first study is devoted to Epicurus’ method of multiple explanations, the second study compares the meteorological sections of Epicurus' Letter to Pythocles and Lucretius' De rerum natura with other ancient meteorological accounts as regards the range and order of subjects, and the third study investigates what shape the Epicureans assigned to the earth. [For an updated version of this thesis, see Frederik (...) A. Bakker, Epicurean Meteorology: Sources, Method, Scope and Organization, Leiden/Boston: Brill, 2016]. (shrink)